Is the epaxos implementation correct?

[Nugine]

After a quick search, I find that the epaxos message definitions have no Prepare and PrepareReply.
Is the recovery procedure implemented somewhere else?

paxi/epaxos/msg.go

Lines 10 to 16 in 768848a

	func init() {
	gob.Register(PreAccept{})
	gob.Register(PreAcceptReply{})
	gob.Register(Accept{})
	gob.Register(AcceptReply{})
	gob.Register(Commit{})
	}